Phono stage hiss - Measurements

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This also makes me think of some posts a while ago which suggested that the phono stage in the D-Premier was superior to that ultimately used in the Expert series and onwards.  I have no idea if there is actually a technical difference with the D-Premier phono stage, but one thing that would be fascinating to do would be compare a "hiss" recording of a D-Premier phono stage with one from an Expert.
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Notwithstanding the other posts you mentioned, Mathieu is on record at the OAC event in July saying that the phono stages are "technically identical" in the D-Premier and Expert series (other than the 100/110).  Make of that what you will